1. General description
The 74LVC74A is a dual edge triggered D-type flip-flop with individual data (D) inputs,
clock (CP) inputs, set (SD) and (RD) inputs, and complementary Q and Q outputs.
The set and reset are asynchronous active LOW inputs and operate independently of the
clock input. Information on the data input is transferred to the Q output on the
LOW-to-HIGH transition of the clock pulse. The D inputs must be stable one set-up time
prior to the LOW-to-HIGH clock transition, for predictable operation.
Schmitt trigger action at all inputs makes the circuit highly tolerant of slower input rise and
fall times.
2. Features
n5 V tolerant inputs for interlacing with 5 V logic
nWide supply voltage range from 1.2 V to 3.6 V
nCMOS low power consumption
nDirect interface with TTL levels
nComplies with JEDEC standard JESD8-B/JESD36
nESD protection:
uHBM JESD22-A114D exceeds 2000 V
uCDM JESD22-C101C exceeds 1000 V
nSpecified from 40 °C to +85 °C and 40 °C to 125 °C
3. Ordering information
74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
Rev. 06 — 4 June 2007 Product data sheet
Table 1. Ordering information
Type number Package
Temperature range Name Description Version
74LVC74AD 40 °C to +125 °C SO14 plastic small outline package; 14 leads;
body width 3.9 mm SOT108-1
74LVC74ADB 40 °C to +125 °C SSOP14 plastic shrink small outline package; 14 leads;
body width 5.3 mm SOT337-1
74LVC74APW 40 °C to +125 °C TSSOP14 plastic thin shrink small outline package; 14 leads;
body width 4.4 mm SOT402-1
74LVC74ABQ 40 °C to +125 °C DHVQFN14 plastic dual in-line compatible thermal enhanced very thin
quad flat package; no leads; 14 terminals;
body 2.5 ×3×0.85 mm
SOT762-1
74LVC74A_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 4 June 2007 2 of 16
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
4. Functional diagram
Fig 1. Logic symbol Fig 2. IEC logic symbol Fig 3. Functional diagram
mna418
RD
FF
SD
410
Q1Q
2Q
1Q
2Q
5
9
2
12
3
11 6
8
Q
1SD
CP
2CP
1CP
2D
1D D
2SD
113
1RD 2RD
mna419
6
3
2C1
4S
1D
1R
5
8
11
12 C1
10 S
1D
13 R
9
RD
FF
SD
4
Q1Q
1Q
5
2
3
6
Q
1SD
CP
1CP
1D D
11RD
mna420
RD
FF
SD
10
Q2Q
2Q
9
12
11
8
Q
2SD
CP
2CP
2D D
13 2RD
Fig 4. Logic diagram for one flip-flop
mna421
SD
CP
RD
D
C
C
Q
C
C
C
C
C
C
Q
C
C
74LVC74A_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 4 June 2007 3 of 16
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
5. Pinning information
5.1 Pinning
5.2 Pin description
(1) The die substrate is attached to this pad using
conductive die attach material. It can not be used as
a supply pin or input.
Fig 5. Pin configuration for SO14 and (T)SSOP14 Fig 6. Pin configuration for DHVQFN14
74
1RD VCC
1D 2RD
1CP 2D
1SD 2CP
1Q 2SD
1Q 2Q
GND 2Q
001aad106
1
2
3
4
5
6
7 8
10
9
12
11
14
13
001aad107
74
Transparent top view
1Q 2Q
1Q 2SD
1SD 2CP
1CP 2D
2RD1D
GND(1)
GND
2Q
1RD
VCC
6 9
5 10
4 11
3 12
2 13
7
8
1
14
terminal 1
index area
Table 2. Pin description
Symbol Pin Description
1RD 1 asynchronous reset-direct input (active LOW)
1D 2 data input
1CP 3 clock input (LOW-to-HIGH, edge-triggered)
1SD 4 asynchronous set-direct input (active LOW)
1Q 5 true output
1Q 6 complement output
GND 7 ground (0 V)
2Q 8 complement output
2Q 9 true output
2SD 10 asynchronous set-direct input (active LOW)
2CP 11 clock input (LOW-to-HIGH, edge-triggered)
2D 12 data input
2RD 13 asynchronous reset-direct input (active LOW)
VCC 14 supply voltage
74LVC74A_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 4 June 2007 4 of 16
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
6. Functional description
[1] H = HIGH voltage level
L = LOW voltage level
X = don’t care
[1] H = HIGH voltage level
L = LOW voltage level
= LOW-to-HIGH transition
Qn+1 = state after the next LOW-to-HIGH CP transition
X = don’t care
7. Limiting values
[1] The minimum input voltage ratings may be exceeded if the input current ratings are observed.
[2] The output voltage ratings may be exceeded if the output current ratings are observed.
[3] For SO14 packages: above 70 °C the value of Ptot derates linearly with 8 mW/K.
For (T)SSOP14 packages: above 60 °C the value of Ptot derates linearly with 5.5 mW/K.
For DHVQFN14 packages: above 60 °C the value of Ptot derates linearly with 4.5 mW/K.
Table 3. Function table[1]
Input Output
nSD nRD nCP nD nQ nQ
LHXXHL
HLXXLH
LLXXHH
Table 4. Function table[1]
Input Output
nSD nRD nCP nD nQn+1 nQn+1
HHLLH
HHHHL
Table 5. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Max Unit
VCC supply voltage 0.5 +6.5 V
IIK input clamping current VI < 0 V 50 - mA
VIinput voltage [1] 0.5 +6.5 V
IOK output clamping current VO > VCC or VO < 0 V - ±50 mA
VOoutput voltage [2] 0.5 VCC + 0.5 V
IOoutput current VO = 0 V to VCC -±50 mA
ICC supply current - 100 mA
IGND ground current 100 - mA
Tstg storage temperature 65 +150 °C
Ptot total power dissipation Tamb = 40 °C to +125 °C[3] - 500 mW
74LVC74A_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 4 June 2007 5 of 16
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
8. Recommended operating conditions
9. Static characteristics
[1] All typical values are measured at VCC = 3.3 V (unless stated otherwise) and Tamb =25°C.
Table 6. Recommended operating conditions
Symbol Parameter Conditions Min Typ Max Unit
VCC supply voltage for maximum speed performance 2.7 - 3.6 V
for low-voltage applications 1.2 - 3.6 V
VIinput voltage 0 - 5.5 V
Vooutput voltage 0 - VCC V
Tamb ambient temperature 40 - +125 °C
t/V input transition rise and
fall rate VCC = 1.2 V to 2.7 V 0 - 20 ns/V
VCC = 2.7 V to 3.6 V 0 - 10 ns/V
Table 7. Static characteristics
At recommended operating conditions. Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 40 °C to +85 °C40 °C to +125 °C Unit
Min Typ[1] Max Min Max
VIH HIGH-level
input voltage VCC = 1.2 V VCC -- V
CC -V
VCC = 2.7 V to 3.6 V 2.0 - - 2.0 - V
VIL LOW-level
input voltage VCC = 1.2 V - - 0 - 0 V
VCC = 2.7 V to 3.6 V - - 0.8 - 0.8 V
VOH HIGH-level
output
voltage
VI=V
IH or VIL
IO=100 µA;
VCC = 2.7 V to 3.6 V VCC 0.2 - VCC 0.3 - V
IO=12 mA; VCC = 2.7 V 2.2 - - 2.05 - V
IO=18 mA; VCC = 3.0 V 2.4 - - 2.25 - V
IO=24 mA; VCC = 3.0 V 2.2 - - 2.0 - V
VOL LOW-level
output
voltage
VI=V
IH or VIL
IO= 100 µA;
VCC = 2.7 V to 3.6 V - - 0.2 - 0.3 V
IO= 12 mA; VCC = 2.7 V - - 0.4 - 0.6 V
IO= 24 mA; VCC = 3.0 V - - 0.55 - 0.8 V
IIinputleakage
current VCC = 3.6 V; VI= 5.5 Vor GND - ±0.1 ±5-±20 µA
ICC supply
current VCC = 3.6 V; VI=V
CC or GND;
IO=0A - 0.1 10 - 40 µA
ICC additional
supply
current
per input pin;
VCC = 2.7 V to 3.6 V;
VI=V
CC 0.6 V; IO=0A
- 5 500 - 5000 µA
CIinput
capacitance VCC = 0 V to 3.6 V;
VI= GND to VCC
- 4.0 - - - pF
74LVC74A_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 4 June 2007 6 of 16
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
10. Dynamic characteristics
[1] Typical values are measured at Tamb =25°C. For VCC = 3.0 V to 3.6 V range, typical values are measured at 3.3 V.
[2] tpd is the same as tPLH and tPHL.
[3] Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design.
Table 8. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 9.
Symbol Parameter Conditions 40 °C to +85 °C40 °C to +125 °C Unit
Min Typ[1] Max Min Max
tpd propagation
delay nCP to nQ, nQ; see Figure 7 [2]
VCC = 1.2 V - 15 - - - ns
VCC = 2.7 V 1.0 2.7 6.0 1.0 7.5 ns
VCC = 3.0 V to 3.6 V 1.0 2.5 5.2 1.0 6.5 ns
nSD to nQ, nQ; see Figure 8
VCC = 1.2 V - 15 - - - ns
VCC = 2.7 V 1.0 3.2 6.4 1.0 8.0 ns
VCC = 3.0 V to 3.6 V 1.0 2.5 5.4 1.0 7.0 ns
nRD to nQ, nQ; see Figure 8
VCC = 1.2 V - 15 - - - ns
VCC = 2.7 V 1.0 3.2 6.4 1.0 8.0 ns
VCC = 3.0 V to 3.6 V 1.0 2.5 5.4 1.0 7.0 ns
tWpulse width clock HIGH or LOW; see Figure 7
VCC = 2.7 V 3.3 - - 4.5 - ns
VCC = 3.0 V to 3.6 V 3.3 1.3 - 4.5 - ns
set or reset LOW; see Figure 8
VCC = 2.7 V 3.3 - - 4.5 - ns
VCC = 3.0 V to 3.6 V 3.3 1.7 - 4.5 - ns
trec recovery time set or reset; see Figure 8
VCC = 2.7 V 1.5 - - 1.0 - ns
VCC = 3.0 V to 3.6 V +1.0 3.0 - 1.0 - ns
tsu set-up time nD to nCP; see Figure 7
VCC = 2.7 V 2.2 - - 2.2 - ns
VCC = 3.0 V to 3.6 V 2.0 0.8 - 2.0 - ns
thhold time nD to nCP; see Figure 7
VCC = 2.7 V 1.0 - - 1.0 - ns
VCC = 3.0 V to 3.6 V +1.0 0.2 - 1.0 - ns
fmax maximum
frequency nCP; see Figure 7
VCC = 2.7 V 83 - - 66 - MHz
VCC = 3.0 V to 3.6 V 150 250 120 - MHz
tsk(o) output skew time VCC = 3.0 V to 3.6 V [3] - - 1.0 - 1.5 ns
CPD power
dissipation
capacitance
per flip-flop; VI= GND to VCC [4]
VCC = 3.3 V - 15 - - - pF
74LVC74A_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 4 June 2007 7 of 16
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
[4] CPD is used to determine the dynamic power dissipation (PDin µW).
PD=C
PD ×VCC2×fi×N+Σ(CL×VCC2×fo) where:
fi= input frequency in MHz; fo= output frequency in MHz
CL= output load capacitance in pF
VCC = supply voltage in Volts
N = number of inputs switching
Σ(CL×VCC2×fo) = sum of the outputs
11. AC waveforms
The shaded areas indicate when the input is permitted to change for predictable output performance.
VM= 1.5 Vat VCC 2.7 V;
VM= 0.5 ×VCC at VCC < 2.7 V;
VOL and VOH are typical output voltage levels that occur with the output load.
Fig 7. The clock input (nCP) to output (nQ, nQ) propagation delays, the clock pulse width, the nD to nCP set-up,
the nCP to nD hold times, and the maximum frequency
mna422
th
tsu
th
tPHL
tPHL
tW
tPLH
tPLH
tsu
1/fmax
VM
VM
VM
VM
VI
GND
VI
GND
nCP input
nD input
VOH
VOL
nQ output
VOH
VOL
nQ output
74LVC74A_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 4 June 2007 8 of 16
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
VM= 1.5 Vat VCC 2.7 V;
VM= 0.5 ×VCC at VCC < 2.7 V;
VOL and VOH are typical output voltage levels that occur with the output load.
Fig 8. The set (nSD) and reset (nRD) input to output (nQ, nQ) propagation delays, the set and reset pulse widths,
and the nRD to nCP recovery time
mna423
trec
tPHL
tPHL
tW
tPLH
tPLH
VM
VM
VM
tW
VM
VM
VI
GND
VI
GND
nSD input
VI
GND
nRD input
nCP input
VOH
VOL
nQ output
VOH
VOL
nQ output
74LVC74A_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 4 June 2007 9 of 16
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
Test data is given in Table 9.
Definitions for test circuit:
RL = Load resistance.
CL = Load capacitance including jig and probe capacitance.
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
Fig 9. Load circuitry for switching times
VMVM
tW
tW
10 %
90 %
0 V
VI
VI
negative
pulse
positive
pulse
0 V
VMVM
90 %
10 %
tf
tr
tr
tf
001aaf615
VCC
VIVO
DUT
CL
RTRL
PULSE
GENERATOR
Table 9. Test data
Supply voltage Input Load
VItr, tfCLRL
1.2 V VCC 2.5 ns 50 pF 500
2.7 V 2.7 V 2.5 ns 50 pF 500
3.0 V to 3.6 V 2.7 V 2.5 ns 50 pF 500
74LVC74A_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 4 June 2007 10 of 16
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
12. Package outline
Fig 10. Package outline SOT108-1 (SO14)
UNIT A
max. A1A2A3bpcD
(1) E(1) (1)
eH
ELL
pQZywv θ
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm
inches
1.75 0.25
0.10 1.45
1.25 0.25 0.49
0.36 0.25
0.19 8.75
8.55 4.0
3.8 1.27 6.2
5.8 0.7
0.6 0.7
0.3 8
0
o
o
0.25 0.1
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
Note
1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.
1.0
0.4
SOT108-1
X
wM
θ
A
A1
A2
bp
D
HE
Lp
Q
detail X
E
Z
e
c
L
vMA
(A )
3
A
7
8
1
14
y
076E06 MS-012
pin 1 index
0.069 0.010
0.004 0.057
0.049 0.01 0.019
0.014 0.0100
0.0075 0.35
0.34 0.16
0.15 0.05
1.05
0.041
0.244
0.228 0.028
0.024 0.028
0.012
0.01
0.25
0.01 0.004
0.039
0.016
99-12-27
03-02-19
0 2.5 5 mm
scale
SO14: plastic small outline package; 14 leads; body width 3.9 mm SOT108-1
74LVC74A_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 4 June 2007 11 of 16
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
Fig 11. Package outline SOT337-1 (SSOP14)
UNIT A1A2A3bpcD
(1) E(1) eH
ELL
pQZywv θ
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm 0.21
0.05 1.80
1.65 0.25 0.38
0.25 0.20
0.09 6.4
6.0 5.4
5.2 0.65 1.25 0.2
7.9
7.6 1.03
0.63 0.9
0.7 1.4
0.9 8
0
o
o
0.13 0.1
DIMENSIONS (mm are the original dimensions)
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
SOT337-1 99-12-27
03-02-19
(1)
wM
bp
D
HE
E
Z
e
c
vMA
X
A
y
17
14 8
θ
A
A1
A2
Lp
Q
detail X
L
(A )
3
MO-150
pin 1 index
0 2.5 5 mm
scale
SSOP14: plastic shrink small outline package; 14 leads; body width 5.3 mm SOT337-1
A
max.
2
74LVC74A_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 4 June 2007 12 of 16
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
Fig 12. Package outline SOT402-1 (TSSOP14)
UNIT A1A2A3bpcD
(1) E(2) (1)
eH
ELL
pQZywv θ
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm 0.15
0.05 0.95
0.80 0.30
0.19 0.2
0.1 5.1
4.9 4.5
4.3 0.65 6.6
6.2 0.4
0.3 0.72
0.38 8
0
o
o
0.13 0.10.21
DIMENSIONS (mm are the original dimensions)
Notes
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
0.75
0.50
SOT402-1 MO-153 99-12-27
03-02-18
wM
bp
D
Z
e
0.25
17
14 8
θ
A
A1
A2
Lp
Q
detail X
L
(A )
3
HE
E
c
vMA
X
A
y
0 2.5 5 mm
scale
TSSOP14: plastic thin shrink small outline package; 14 leads; body width 4.4 mm SOT402-1
A
max.
1.1
pin 1 index
74LVC74A_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 4 June 2007 13 of 16
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
Fig 13. Package outline SOT762-1 (DHVQFN14)
terminal 1
index area
0.51
A1Eh
b
UNIT ye
0.2
c
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm 3.1
2.9
Dh
1.65
1.35
y1
2.6
2.4 1.15
0.85
e1
2
0.30
0.18
0.05
0.00 0.05 0.1
DIMENSIONS (mm are the original dimensions)
SOT762-1 MO-241 - - -- - -
0.5
0.3
L
0.1
v
0.05
w
0 2.5 5 mm
scale
SOT762-1
DHVQFN14: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads;
14 terminals; body 2.5 x 3 x 0.85 mm
A(1)
max.
AA1c
detail X
y
y1C
e
L
Eh
Dh
e
e1
b
26
13 9
8
7
1
14
X
D
E
C
BA
02-10-17
03-01-27
terminal 1
index area
AC
CB
vM
wM
E(1)
Note
1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.
D(1)
74LVC74A_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 4 June 2007 14 of 16
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
13. Abbreviations
14. Revision history
Table 10. Abbreviations
Acronym Description
CDM Charged Device Model
DUT Device Under Test
ESD ElectroStatic Discharge
HBM Human Body Model
TTL Transistor-Transistor Logic
Table 11. Revision history
Document ID Release date Data sheet status Change notice Supersedes
74LVC74A_6 20070604 Product data sheet - 74LVC74A_5
Modifications: Change of hold time in Table 8 “Dynamic characteristics”. Minimum values changed to 1.0 ns.
74LVC74A_5 20070525 Product data sheet - 74LVC74A_4
74LVC74A_4 20030526 Product specification - 74LVC74A_3
74LVC74A_3 20020618 Product specification - 74LVC74A_2
74LVC74A_2 19980617 Product specification - 74LVC74A_1
74LVC74A_1 19980617 Product specification - -
74LVC74A_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 4 June 2007 15 of 16
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
15. Legal information
15.1 Data sheet status
[1] Please consult the most recently issued document before initiating or completing a design.
[2] The term ‘short data sheet’ is explained in section “Definitions”.
[3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nxp.com.
15.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
15.3 Disclaimers
General — Information in this document is believed to be accurate and
reliable. However, NXP Semiconductors does not give any representations or
warranties, expressed or implied, as to the accuracy or completeness of such
information and shall have no liability for the consequences of use of such
information.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in medical, military, aircraft,
space or life support equipment, nor in applications where failure or
malfunction of a NXP Semiconductors product can reasonably be expected to
result in personal injury, death or severe property or environmental damage.
NXP Semiconductors accepts no liability for inclusion and/or use of NXP
Semiconductors products in such equipment or applications and therefore
such inclusion and/or use is at the customer’s own risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) may cause permanent
damage to the device. Limiting values are stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.
Terms and conditions of sale — NXP Semiconductors products are sold
subject to the general terms and conditions of commercial sale, as published
at http://www.nxp.com/profile/terms, including those pertaining to warranty,
intellectual property rights infringement and limitation of liability, unless
explicitly otherwise agreed to in writing by NXP Semiconductors. In case of
any inconsistency or conflict between information in this document and such
terms and conditions, the latter will prevail.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
15.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
16. Contact information
For additional information, please visit: http://www.nxp.com
For sales office addresses, send an email to: salesaddresses@nxp.com
Document status[1][2] Product status[3] Definition
Objective [short] data sheet Development This document contains data from the objective specification for product development.
Preliminary [short] data sheet Qualification This document contains data from the preliminary specification.
Product [short] data sheet Production This document contains the product specification.
NXP Semiconductors 74LVC74A
Dual D-type flip-flop with set and reset; positive-edge trigger
© NXP B.V. 2007. All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
Date of release: 4 June 2007
Document identifier: 74LVC74A_6
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
17. Contents
1 General description. . . . . . . . . . . . . . . . . . . . . . 1
2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Ordering information. . . . . . . . . . . . . . . . . . . . . 1
4 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
5 Pinning information. . . . . . . . . . . . . . . . . . . . . . 3
5.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3
6 Functional description . . . . . . . . . . . . . . . . . . . 4
7 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 4
8 Recommended operating conditions. . . . . . . . 5
9 Static characteristics. . . . . . . . . . . . . . . . . . . . . 5
10 Dynamic characteristics . . . . . . . . . . . . . . . . . . 6
11 AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . 7
12 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 10
13 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 14
14 Revision history. . . . . . . . . . . . . . . . . . . . . . . . 14
15 Legal information. . . . . . . . . . . . . . . . . . . . . . . 15
15.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 15
15.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
15.3 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
15.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
16 Contact information. . . . . . . . . . . . . . . . . . . . . 15
17 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16